Co-author here. Yes, this UI is showing metadata extracted from the syllabi (namely, text assignments). Not the documents themselves, which, unfortunately, we're unable to make public for a mix of copyright and privacy reasons.
For subjects like Human Anatomy, the list of potential books is very limited, but I'm more interested in how the course is structured. Which anatomical structures or body regions are highlighted or covered, whether the syllabi uses systems or regional approach etc.